Mechanomyographic and electromyographic time and frequency domain responses during submaximal to maximal isokinetic muscle actions of the biceps brachii

Travis W. Beck, Terry J. Housh, Glen O. Johnson, Joseph P. Weir, Joel T. Cramer, Jared W. Coburn, Moh H. Malek

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

The purpose of this investigation was to determine the mechanomyographic (MMG) and electromyographic (EMG) amplitude and mean power frequency (MPF) versus torque relationships during isokinetic muscle actions of the biceps brachii. Twelve adults [mean (SD) age, 22.2 (2.7) years] performed submaximal to maximal isokinetic muscle actions of the dominant forearm flexors. Following determination of isokinetic peak torque (PT), the subjects randomly performed submaximal muscle actions in 20% increments from 20% to 80% PT. Polynomial regression analyses indicated linear increases in both MMG (r2 = 0.984) and EMG (r2 = 0.988) amplitude to 100% PT. There were no significant (P > 0.05) relationships, however, for MMG and EMG MPF versus isokinetic torque. The results demonstrated similar responses for MMG and EMG in both the time and frequency domains. These findings suggested that simultaneous examination of MMG and EMG amplitude and MPF may be useful for describing the unique motor control strategies that modulate dynamic torque production. Furthermore, the results indicated that dynamic muscle actions can be used when applying techniques that require a linear EMG amplitude versus torque relationship.

Original languageEnglish (US)
Pages (from-to)352-359
Number of pages8
JournalEuropean Journal of Applied Physiology
Volume92
Issue number3
DOIs
StatePublished - Jul 2004
Externally publishedYes

Keywords

  • Isokinetic muscle actions
  • Mechanomyography
  • Motor control strategies

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Public Health, Environmental and Occupational Health
  • Physiology (medical)

Fingerprint Dive into the research topics of 'Mechanomyographic and electromyographic time and frequency domain responses during submaximal to maximal isokinetic muscle actions of the biceps brachii'. Together they form a unique fingerprint.

Cite this